Cita APA (7th ed.)

Laurel, R. S., Melchor, M., & De Ocampo, M. G. (1992). My first book of "o" words: A sound foundation approach for beginning readers. Bookmark Inc.

Cita Chicago (17th ed.)

Laurel, Rayla S., Merci Melchor, i Maricar G. De Ocampo. My First Book of "O" Words: A Sound Foundation Approach for Beginning Readers. Makati, Metro Manila: Bookmark Inc, 1992.

Cita MLA (9th ed.)

Laurel, Rayla S., et al. My First Book of "O" Words: A Sound Foundation Approach for Beginning Readers. Bookmark Inc, 1992.